/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemBlueprintLibrary.h
Returns number of target data objects, not necessarily number of distinct targets
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="Ability|TargetData") static int32 GetDataCountFromTargetData ( const [FGameplayAbilityTargetDataHandle](API\Plugins\GameplayAbilities\Abilities\FGameplayAbilityTargetDataHandle) & TargetData )